According to the code inspection, there is a JEP-200 issue in the plugin:

• https://github.com/jenkinsci/microfocus-da-plugin/blob/d8b4f731e0d46a45f6a8cbacfd43084181f4d028/src/main/java/com/microfocus/jenkins/plugins/da/model/DAStep.java#L128

This code likely causes a JEP-200 security exception when the object gets persisted to the disk. "java.io.PrintStream" is not whitelisted in Jenkins for a reason, because loggers are not expected reliably after being deserialized from the disk.

Useful links about JEP-200:

• Blog post for users: https://jenkins.io/blog/2018/03/15/jep-200-lts/
• JEP-200 guidelines for plugin developers: https://jenkins.io/blog/2018/01/13/jep-200/#for-plugin-developers